Triangle Sum Theorem
7th Grade
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Triangle Sum Theorem
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Medium
Standards-aligned
Morina HeritageMS
Used 84+ times
FREE Resource
About this resource
This quiz focuses on the Triangle Sum Theorem, a fundamental concept in geometry that establishes the relationship between the three interior angles of any triangle. The content is most appropriate for 7th or 8th grade students who are developing their understanding of geometric properties and algebraic reasoning. Students need to master the core principle that the sum of all interior angles in a triangle equals 180 degrees, and they must apply this knowledge to solve for missing angle measures using both direct calculation and algebraic methods. The questions progress from basic conceptual understanding to more complex problem-solving scenarios that require students to set up and solve equations, work with angle relationships, and recognize special cases such as equilateral triangles where all angles measure 60 degrees. Created by Morina HeritageMS, a Mathematics teacher in US who teaches grade 7. This quiz serves as an excellent instructional tool for introducing, reinforcing, and assessing student understanding of the Triangle Sum Theorem across multiple classroom contexts. Teachers can use it as a warm-up activity to activate prior knowledge, as guided practice during direct instruction, or as a formative assessment to gauge student mastery before moving to more advanced triangle concepts. The quiz works particularly well for homework assignments and review sessions, allowing students to practice computational skills while deepening their conceptual understanding of triangle properties. This assessment aligns with standards 7.G.A.2 and 8.G.A.5, which focus on drawing geometric figures with given conditions and using informal arguments to establish facts about angle relationships in geometric figures.
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Triangle Sum Theorem deals with _______ of a triangle
Tags
CCSS.8.G.A.5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The Triangle Sum Theorem states that the sum of all angles in a triangle is ______.
Tags
CCSS.8.G.A.5
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the measure of the angle indicated.
Tags
CCSS.8.G.A.5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What is the third angle of a triangle whose 1st angle is 79 and the 2nd angle is 43?
Tags
CCSS.8.G.A.5
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the measure of the missing angle.
Tags
CCSS.7.G.B.5
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Solve for x.
Tags
CCSS.8.G.A.5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the measure of angle A.
Tags
CCSS.8.G.A.5
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